CN108983728A - A kind of system for realizing that lithium washes automatic process control system using conductivity meter - Google Patents
A kind of system for realizing that lithium washes automatic process control system using conductivity meter Download PDFInfo
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- CN108983728A CN108983728A CN201810911899.0A CN201810911899A CN108983728A CN 108983728 A CN108983728 A CN 108983728A CN 201810911899 A CN201810911899 A CN 201810911899A CN 108983728 A CN108983728 A CN 108983728A
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- lithium
- evaporator
- cleaning
- conductivity
- washes
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 247
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 246
- 238000004886 process control Methods 0.000 title claims abstract description 19
- 238000001179 sorption measurement Methods 0.000 claims abstract description 49
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 44
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims description 86
- 238000005406 washing Methods 0.000 claims description 29
- 239000006210 lotion Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 abstract description 23
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000003556 assay Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 11
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 10
- 229910001425 magnesium ion Inorganic materials 0.000 description 10
- 239000003463 adsorbent Substances 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 6
- 229910052736 halogen Inorganic materials 0.000 description 5
- 150000002367 halogens Chemical class 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000012267 brine Substances 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 241001131796 Botaurus stellaris Species 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910003002 lithium salt Inorganic materials 0.000 description 2
- 159000000002 lithium salts Chemical class 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41845—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by system universality, reconfigurability, modularity
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/33—Director till display
- G05B2219/33273—DCS distributed, decentralised controlsystem, multiprocessor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention provides a kind of system for realizing that lithium washes automatic process control system using conductivity meter, including conductivity meter, the conductivity meter are mounted on the export pipeline of the lithium ion adsorption tower, for detecting the conductivity of lithium eluate in the lithium ion adsorption tower.After the present invention is detected automatically using conductivity meter, the accuracy and production efficiency of detection are improved, the trouble and waste of time of every step assay is overcome, reduces the loss of lithium ion；Using distributed monitoring control system, the ON/OFF of valve, improves the degree of automation that lithium washes process, realizes large-scale automated production during the remote data control lithium shown according to conductivity meter is washed；The system can be run steadily in the long term, and automatization level is high, easy to operate, high safety, have certain economic benefit.
Description
Technical field
The present invention relates to automation control area, the system for washing automatic process control system more particularly, to a kind of lithium.
Background technique
China's lithium resource content is at the forefront in the world, but it 80% or more is stored in China's salt lake bittern resource, accounts for the world
The 1/3 of salt lake lithium gross reserves, and salt lake bittern has high Mg/Li ratio feature, brings larger difficulty to the extraction of lithium.?
Developing can be used for the method that salt lake mentions lithium and has the precipitation method, evaporative crystallization method, calcining salting out method, ion exchange adsorption and solvent
Extraction etc..Ion exchange adsorption refer to using the low lithium brine of the high magnesium of lithium adsorbent selective absorption (Mg/Li ratio be 500:1 or
It is higher) in lithium, complete preliminary separating magnesium and lithium, then carry out lithium wash, the techniques such as de- analysis, lithium salts is separated from brine finally and is mentioned
It takes, obtains required lithium salts product.
Qinghai Saltlake Fozhao Lake Lithium Co., Ltd. of subsidiary/member companies of Qinghai Salt Lake Industry Co., Ltd. is existing
The lithium adsorbent of function admirable is synthesized, which excludes alkali metal, the alkaline earth largely coexisted in brine
The interference of metal ion, and the lithium ion in brine is adsorbed, and the absorption of adsorbent/lithium is washed/takes off and washes performance stabilization, it is suitble to big rule
Mould operating with and producing, and preparation method is simple, cheap, no pollution to the environment, its performance in operation in recent years
Index is all up target call.But because of ion exchange adsorption technique category new process, quality monitoring means are single and automate
Degree is lower, especially the technology controlling and process of the washed journey of lithium, has the following problems:
1 controls production using manual switch valve one by one, and production efficiency is lower.Adsorption tower area equipment is more, Mei Geta
Body has 12 control valves, tower body quantity up to a hundred, a large amount of personnel on site is thus needed to operate.
2 during lithium is washed, and the amount determination for analyzing contained magnesium ion in measurement lithium eluate by laboratory is subsequent
Whether qualifying liquid can touch the mark requirement, in order to guarantee that technique normal need multifrequency sub-sampling measures, both increase manpower in this way
The plenty of time is wasted again, reduces efficiency.
Summary of the invention
To solve the above-mentioned problems, the present invention provide it is a kind of using conductivity meter realize lithium wash automatic process control system be
System, by the way that conductivity meter is mounted on the export pipeline of lithium ion adsorption tower, the remote data control that is shown according to conductivity meter
The ON/OFF of valve during lithium processed is washed, it is ensured that lithium washes to obtain the magnesium ion index in qualifying liquid containing lithium in technique claimed range,
And then realize that absorption method mentions the new process that lithium technique lithium washes automatic process control system.The invention provides the following technical scheme:
According to an aspect of the present invention, provide it is a kind of using conductivity meter realize lithium wash automatic process control system be
System, comprising: lithium cleaning of evaporator, the lithium cleaning of evaporator is for accommodating lithium washing lotion；Lithium ion adsorption tower, the lithium ion adsorption tower are washed by lithium
Output pipe is connect with the lithium cleaning of evaporator, for receiving the lithium washing lotion；Conductivity meter, the conductivity meter are mounted on the lithium
On the export pipeline of ionic adsorption tower, for detecting the conductivity of lithium eluate in the lithium ion adsorption tower；Valve, the valve
Door is mounted on the lithium cleaning of evaporator and the lithium ion adsorption tower, for controlling entrance and the row of the lithium washing lotion and lithium eluate
Out；Controller, the controller connect the conductivity meter and the valve, the data shown for monitoring conductivity meter, control
Lithium processed washes the ON/OFF of valve described in journey；If the conductivity is higher than predetermined threshold, repeatedly lithium washes journey；If institute
Conductivity is stated lower than predetermined threshold, then lithium washes end.
It according to embodiment of the present invention, further include that lithium washes pump, the lithium, which washes pump and is mounted on the lithium, washes output
In pipeline, for the lithium washing lotion to be delivered to the lithium ion adsorption tower.
According to embodiment of the present invention, wherein the predetermined threshold of the conductivity is 30000us/cm2If
The conductivity is higher than 30000us/cm2, then repeatedly lithium washes journey；If the conductivity is lower than 30000us/cm2, then lithium is washed
Terminate.
According to embodiment of the present invention, wherein include at least a lithium cleaning of evaporator.
According to embodiment of the present invention, wherein the lithium cleaning of evaporator includes the first lithium cleaning of evaporator, the second lithium cleaning of evaporator, the
Three lithium cleaning of evaporators and the 4th lithium cleaning of evaporator, this four lithium cleaning of evaporators are for accommodating the different lithium washing lotion of conductivity.
According to embodiment of the present invention, wherein the export pipeline of the lithium ion adsorption tower is respectively with described
Two lithium cleaning of evaporators, third lithium cleaning of evaporator and the connection of the 4th lithium cleaning of evaporator, for making the lithium eluate going out through the lithium ion adsorption tower
Mouth pipeline returns in the second lithium cleaning of evaporator, third lithium cleaning of evaporator and the 4th lithium cleaning of evaporator.
According to embodiment of the present invention, further include pure water pipeline, the entrance of the pure water pipeline respectively with institute
State the first lithium cleaning of evaporator, the second lithium cleaning of evaporator is connected with third lithium cleaning of evaporator, for the first lithium cleaning of evaporator, the second lithium cleaning of evaporator and third
Pure water is supplemented in lithium cleaning of evaporator.
Compared with the existing technology, it is of the present invention it is a kind of using conductivity meter realize lithium wash automatic process control system be
After system is had the advantage that and detected automatically using conductivity meter, the accuracy and production efficiency of detection are improved, every step is overcome
The trouble and waste of time of assay, reduce the loss of lithium ion；Using distributed monitoring control system, according to conductivity
The ON/OFF of valve, improves the degree of automation that lithium washes process, realizes extensive during the remote data control lithium that instrument is shown is washed
Automated production；The system can be run steadily in the long term, and automatization level is high, easy to operate, high safety, have certain warp
Ji benefit.
Detailed description of the invention
Fig. 1 is to realize that lithium washes the schematic diagram of the system of automatic process control system using conductivity meter.
Fig. 2 is the operation schematic diagram provided by the invention that lithium eluate is returned to the recycling of lithium cleaning of evaporator.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, and reference label refers to the group in the present invention
Part, technology, realizing under appropriate circumstances so as to advantages and features of the invention can be easier to be understood.Following description is pair
The materialization of the claims in the present invention, and other specific implementations not clearly stated relevant to claim also belong to power
The range that benefit requires.
Fig. 1 shows the signal of the system provided by the invention that automatic process control system is washed using conductivity meter realization lithium
Figure.
As shown in Figure 1, a kind of system for realizing that lithium washes automatic process control system using conductivity meter provided by the invention, packet
Include: lithium cleaning of evaporator 1, the lithium cleaning of evaporator 1 is for accommodating lithium washing lotion；Lithium ion adsorption tower 2, the lithium ion adsorption tower 2 are washed by lithium
Output pipe 3 is connect with the lithium cleaning of evaporator 1, for receiving the lithium washing lotion；Conductivity meter 5, the conductivity meter 5 are mounted on institute
It states on the export pipeline 4 of lithium ion adsorption tower 2, for detecting the conductivity of lithium eluate in the lithium ion adsorption tower 2；Valve
Door, the valve are mounted on the lithium cleaning of evaporator 1 and the lithium ion adsorption tower 2, are washed out for controlling the lithium washing lotion and lithium
The inlet and outlet of liquid；Controller 6, the controller 6 connects the conductivity meter 5 and the valve, for monitoring conductivity
The data that instrument 5 is shown, control lithium wash the ON/OFF of valve described in journey；If the conductivity is higher than predetermined threshold, repeat
Lithium washes journey；If the conductivity is lower than predetermined threshold, lithium washes end.
Select extraordinary lithium adsorption plant as lithium ion adsorption tower 2 in the present embodiment, using dedicated lithium adsorbent to logical
The old halogen entered in extraordinary lithium adsorption plant is adsorbed, remaining after being adsorbed in extraordinary lithium adsorption plant using lithium washing lotion later
Old halogen is replaced away, and after the magnesium ion concentration in lithium eluate reaches technic index requirement, being considered as the washed journey of lithium terminates, so
After enter back into de- analysis process, by lithium adsorbent adsorb lithium cement out again.
A kind of system for realizing that lithium washes automatic process control system using conductivity meter provided by the invention, further includes that lithium is washed
Pump 7, the lithium wash pump 7 and are mounted on the lithium and wash in output pipe 3, adsorb for the lithium washing lotion to be delivered to the lithium ion
Tower 2.The lithium washes pump 7 and the lithium washing lotion accommodated in the lithium cleaning of evaporator 1 is delivered to the lithium ion adsorption tower 2, first will be described
Remaining old halogen is replaced away after adsorbing in lithium ion adsorption tower 2, then constantly to being rinsed in the lithium ion adsorption tower 2,
Until terminating lithium when magnesium ion concentration reaches 2g/L in the lithium eluate and washing journey, lithium eluate at this time is known as containing lithium conjunction
Lattice liquid.
A kind of system for realizing that lithium washes automatic process control system using conductivity meter provided by the invention, wherein the electricity
The predetermined threshold of conductance is 30000us/cm2If the conductivity is higher than 30000us/cm2, then repeatedly lithium washes journey；If
The conductivity is lower than 30000us/cm2, then lithium washes end.
The conductivity meter 5 measures the conductivity of lithium eluate, so that it is determined that in lithium eluate magnesium ion concentration.This hair
The bright not concrete model to conductivity meter 5 and type make limitation.The measuring principle of the conductivity meter 5 is surveyed by Ohm's law
Above-mentioned polarization phenomena can be mitigated or eliminated using high-frequency alternating current measuring method in the resistance for determining solvent portions between parallel pole, because
To be rapid alternately in the oxidation of electrode surface and reduction, result, which can consider, not to be had to aoxidize or restore.Conductivity
Instrument is made of conductance electrode and electricity meter, and electricity meter will be converted using the method for the AC signal of appropriate frequency after signal enhanced processing
At conductivity.By the conductivity of real-time detection lithium eluate, the concentration of magnesium ion in lithium washing lotion can be conversed, thus to containing
Whether lithium qualifying liquid, which meets technic index, is prejudged.In the present embodiment, magnesium in online conductivity parameters and corresponding lithium eluate
Ion concentration fundamental relation is as follows:
1) conductivity: 30000-50000us/cm2, magnesium ion concentration about 2-3.5g/L in lithium eluate；
2) conductivity: 30000us/cm2Hereinafter, magnesium ion concentration is in 2g/L or less in lithium eluate.
So setting 30000us/cm for the reservation threshold of conductivity in the present invention2, when the conductivity meter 5 detection
Conductivity is higher than 30000us/cm in lithium eluate2When, then repeatedly lithium washes journey；When the lithium of the conductivity meter 5 detection washes out
Conductivity is lower than 30000us/cm in liquid2When, then terminate lithium and wash journey, washes technique into de-.
In the present embodiment, the controller 6 is distributed monitoring control system, and distributed monitoring control system is using microprocessor as base
Plinth, according to the data that online conductivity meter is shown, converses magnesium in lithium eluate by the way of centralized watch, decentralised control
The concentration of ion, so by adjust lithium wash during each valve ON/OFF, reach realize lithium wash journey full-automation operation
Purpose.
Fig. 2 shows the operation schematic diagrams provided by the invention that lithium eluate is returned to the recycling of lithium cleaning of evaporator.
As shown in Fig. 2, a kind of system for realizing that lithium washes automatic process control system using conductivity meter provided by the invention, until
It less include a lithium cleaning of evaporator 1.When the system comprises a lithium cleaning of evaporator, the lithium washing lotion accommodated in lithium cleaning of evaporator is pure water,
By constantly conveying pure water into the lithium ion adsorption tower 2, washed to lithium is carried out in the lithium ion adsorption tower 2.
A kind of system for realizing that lithium washes automatic process control system using conductivity meter provided by the invention, wherein the lithium
Cleaning of evaporator 1 includes the first lithium cleaning of evaporator 11, the second lithium cleaning of evaporator 12, third lithium cleaning of evaporator 13 and the 4th lithium cleaning of evaporator 14, this four lithium cleaning of evaporators are used
In the different lithium washing lotion of receiving conductivity.Wherein, pure water is accommodated in the first lithium cleaning of evaporator 11, is accommodated in the second lithium cleaning of evaporator 12
There is conductivity in 30000-75000us/cm2Lithium washing lotion, accommodate conductivity in 75000- in third lithium cleaning of evaporator 13
100000us/cm2Lithium washing lotion, accommodate conductivity in 100000-160000us/cm in the 4th lithium cleaning of evaporator 142Lithium washing lotion.
A kind of system for realizing that lithium washes automatic process control system using conductivity meter provided by the invention, wherein the lithium
The export pipeline of ionic adsorption tower 2 is connect with the second lithium cleaning of evaporator 12, third lithium cleaning of evaporator 13 and the 4th lithium cleaning of evaporator 14 respectively, is used
In making, the lithium eluate returns to the second lithium cleaning of evaporator 12 through the export pipeline of the lithium ion adsorption tower 2, third lithium is washed
In tank 13 and the 4th lithium cleaning of evaporator 14.
A kind of system for realizing that lithium washes automatic process control system using conductivity meter provided by the invention, further includes pure water
Pipeline 8, the pure water pipeline 8 connect with the first lithium cleaning of evaporator 11, the second lithium cleaning of evaporator 12 and third lithium cleaning of evaporator 13 respectively, are used for
Pure water is supplemented into the first lithium cleaning of evaporator 11, the second lithium cleaning of evaporator 12 and third lithium cleaning of evaporator 13.
System provided by the invention instructs lithium to wash production and automatic control, according to the on-line checking data of conductivity meter 5 with four
Step lithium is washed for scheme, is briefly described.The first step is by conductivity in the 4th lithium cleaning of evaporator 14 in 100000-160000us/cm2's
Lithium washing lotion is delivered in the lithium ion adsorption tower 2, while old halogen that will be remaining after absorption in lithium ion adsorption tower 2 is all replaced
It goes out, and will be discharged outside old halogen；Second step is by conductivity in third lithium cleaning of evaporator 13 in 75000-100000us/cm2Lithium wash
Liquid is delivered in the lithium ion adsorption tower 2, while the lithium eluate being discharged in lithium ion adsorption tower 2 being examined according to conductivity meter
The conductivity of survey is returned in corresponding lithium cleaning of evaporator by the export pipeline of the lithium ion adsorption tower 2, in case lithium is washed next time
It uses；Third step is by conductivity in the second lithium cleaning of evaporator 12 in 30000-75000us/cm2Lithium washing lotion be delivered to the lithium ion
In adsorption tower 2, while the lithium eluate being discharged in lithium ion adsorption tower 2 being returned in corresponding lithium cleaning of evaporator；4th step is by
Pure water in one lithium cleaning of evaporator is delivered in the lithium ion adsorption tower 2, while the lithium that the lithium ion adsorption tower 2 is discharged washes out
Liquid returns in corresponding lithium cleaning of evaporator.Conductivity data during being washed according to lithium, after the preceding four steps lithium of completion washes task, when the 4th
At the end of step lithium is washed, conductivity reaches 30000um/cm2Hereinafter, then lithium washes end, obtained qualifying liquid containing lithium, which enters to take off, washes work
Skill.If this index is not achieved in conductivity, the 4th step lithium washing procedure need to be continued, until conductivity reaches 30000um/cm2With
Until lower.After lithium washes journey, into de- analysis technique, so that the lithium that lithium adsorbent adsorbs be cemented out again.
The controller 6 is as follows to the monitoring data Con trolling index of conductivity meter 5: during lithium is washed, according to the electricity
Detection of the electrical conductivity instrument 5 to the lithium eluate being discharged in the lithium ion adsorption tower 2, the conductivity for returning to the 4th lithium cleaning of evaporator 14 exist
100000-160000us/cm2, the conductivity of third lithium cleaning of evaporator 13 is returned in 75000-10000um/cm2, return to the second lithium cleaning of evaporator
12 conductivity is in 30000-75000um/cm2, the de- conductivity for washing technique is switched in 30000um/cm2Hereinafter, such ability
Guarantee that magnesium ion concentration is in 2g/L or less in qualifying liquid containing lithium.
In the present invention, the controller 6 remotely can monitor the lithium that the conductivity meter 5 detects by DCS at any time and wash
Liquid conductivity out, the content of magnesium ion in solution is conversed according to the numerical value of conductivity, and then judges that subsequent lithium eluate is
It is no to touch the mark, to realize extensive continuous efficiently automated production task.
Compared with the existing technology, it is of the present invention it is a kind of using conductivity meter realize lithium wash automatic process control system be
After system is had the advantage that and detected automatically using conductivity meter, the accuracy and production efficiency of detection are improved, every step is overcome
The trouble and waste of time of assay, reduce the loss of lithium ion；Using distributed monitoring control system, according to conductivity
The ON/OFF of switch valve, improves the degree of automation that lithium washes process, realizes big rule during the remote data control lithium that instrument is shown is washed
The automated production of mould；The system can be run steadily in the long term, and automatization level is high, easy to operate, high safety, be had centainly
Economic benefit.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and this
Field technical staff can be designed alternative embodiment without departing from the scope of the appended claims.In claim
In, any reference symbol between parentheses should not be configured to limitations on claims.
Claims (7)
1. a kind of system for realizing that lithium washes automatic process control system using conductivity meter, comprising:
Lithium cleaning of evaporator, the lithium cleaning of evaporator is for accommodating lithium washing lotion；
Lithium ion adsorption tower, the lithium ion adsorption tower is washed output pipe by lithium and is connect with the lithium cleaning of evaporator, for receiving
State lithium washing lotion；
Conductivity meter, the conductivity meter are mounted on the export pipeline of the lithium ion adsorption tower, for detect the lithium from
The conductivity of lithium eluate in sub- adsorption tower；
Valve, the valve are mounted on the lithium cleaning of evaporator and the lithium ion adsorption tower, for controlling the lithium washing lotion and lithium
The inlet and outlet of eluate；
Controller, the controller connect the conductivity meter and the valve, the data shown for monitoring conductivity meter, control
Lithium processed washes the ON/OFF of valve described in journey；
If the conductivity is higher than predetermined threshold, repeatedly lithium washes journey；If the conductivity is lower than predetermined threshold, lithium
Wash end.
It further include that lithium washes pump 2. system according to claim 1, the lithium, which washes pump and is mounted on the lithium, washes output pipe
In, for the lithium washing lotion to be delivered to the lithium ion adsorption tower.
3. system according to claim 1, wherein the predetermined threshold of the conductivity is 30000us/cm2If described
Conductivity is higher than 30000us/cm2, then repeatedly lithium washes journey；If the conductivity is lower than 30000us/cm2, then lithium washes end.
4. system according to claim 1, wherein include at least a lithium cleaning of evaporator.
5. system according to claim 4, wherein the lithium cleaning of evaporator includes the first lithium cleaning of evaporator, the second lithium cleaning of evaporator, third lithium
Cleaning of evaporator and the 4th lithium cleaning of evaporator, this four lithium cleaning of evaporators are for accommodating the different lithium washing lotion of conductivity.
6. system according to claim 5, wherein the export pipeline of the lithium ion adsorption tower respectively with second lithium
Cleaning of evaporator, third lithium cleaning of evaporator and the connection of the 4th lithium cleaning of evaporator, for making the lithium eluate through the outlet of the lithium ion adsorption tower
Road returns in the second lithium cleaning of evaporator, third lithium cleaning of evaporator and the 4th lithium cleaning of evaporator.
7. system according to claim 6 further includes pure water pipeline, the entrance of the pure water pipeline is respectively with described
One lithium cleaning of evaporator, the second lithium cleaning of evaporator are connected with third lithium cleaning of evaporator, for washing to the first lithium cleaning of evaporator, the second lithium cleaning of evaporator and third lithium
Pure water is supplemented in tank.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118341789A (en) * | 2024-06-14 | 2024-07-16 | 江苏乐尔环境科技股份有限公司 | Online washing system for recycling fly ash |
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| CN1795423A (en) * | 2003-05-22 | 2006-06-28 | 埃科莱布有限公司 | Controlling chemical dispense operations based on a conductivity offset |
| CN201092554Y (en) * | 2007-09-18 | 2008-07-30 | 上海轻工业研究所有限公司 | Controlling means for reclaiming nickel plating waste-water by on-line ion-exchange |
| CN103466836A (en) * | 2013-09-16 | 2013-12-25 | 沃德思源集团有限公司 | Method for controlling amount of alkali addition to water purifying device |
| CN203630571U (en) * | 2014-01-03 | 2014-06-04 | 黑龙江兴和生物科技有限公司 | Conductivity meter on-line cleaning monitoring device |
| CN204417251U (en) * | 2015-01-05 | 2015-06-24 | 广东电网有限责任公司电力科学研究院 | The micro-alkalinisation treatment device of inner cold water nanofiltration |
| CN104588134A (en) * | 2015-01-29 | 2015-05-06 | 青海盐湖工业股份有限公司 | Automatic control system of ion exchange device |
| CN204429309U (en) * | 2015-01-29 | 2015-07-01 | 青海盐湖工业股份有限公司 | Ion interchange unit automatic control system |
| JP6108020B1 (en) * | 2016-09-27 | 2017-04-05 | 東亜ディーケーケー株式会社 | Ion exchange device and anion detection device |
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| CN118341789A (en) * | 2024-06-14 | 2024-07-16 | 江苏乐尔环境科技股份有限公司 | Online washing system for recycling fly ash |
| CN118341789B (en) * | 2024-06-14 | 2024-10-11 | 江苏乐尔环境科技股份有限公司 | Online washing system for recycling fly ash |
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